Final answer:
"Fast as a cheetah" is an example of a simile, comparing the speed of something to the speed of a cheetah.
Step-by-step explanation:
"Fast as a cheetah" is an example of a simile. A simile is a figure of speech that compares two unlike things using the words 'like' or 'as'. In this case, the phrase 'fast as a cheetah' is comparing the speed of something to the speed of a cheetah, emphasizing how fast it is.
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